Window-fastener



J. L. BUSH.

WINDOW FASTENER. FILED JAN-19,1921.

Patented Aug. 23, 1921.

A TTORNE Y JOHN L. BUSH, 0F LITTLE RIVER, KANSAS.

WINDOW-FASTENER.

Specification of Letters Patent.

Patented Aug. 23, 1921.

Application filed January 19, 1921. Serial No. 438,283.

To all whom z't-mag/ concern:

Be it known that I, J OHN L. BUSH, a citizen of the United States, residing in the city of Little River, county .'-'of Rice, and State of Kansas, have invented new and use ful Improvements in Window-Fasteners, of which the following is a specification, reference being had to the accompanying drawings. I This invention relates to window fasteners or looks of the class which is adapted to be mounted at the meeting point of the two window sashes, one portion of the device being mounted upon the lower bar of the upper sash and the complementary portion being mounted upon the upper bar of the lower sash; interlocking elements being provided whereby the two portions may be locked together, and thus secure the window in closed position.

The primary purpose of the invention is to provide a lock of this kind of very simple construction and having very few working parts.

Another object is to produce the device in a form which may be easily attached to the window and which will automatically operate to lock the window when the sashes are closed, with means for readily unlocking the same, as desired.

In the drawings:

Figure 1 is a perspective view showing the look as actually attached to a window;

Fig. 2 is a detail showing the half of the lock which is attached to the lower bar of the upper sash; I

F'g. 3 is a detail showing the half of the lock which is attached to the upper bar of the lower sash;

. Fig. 4 is a detail showing the automatic locking mechanism.

Referring particularly to the drawings, the invention consists in its preferred construction of two quarter spherical housings 1 and 2, which when adjusted or closed together, as shown in Fig. 1, will form a perfect half sphere. These housings are provided with base ears 3 for fastening the housings to the window bars. The housing 1 is adapted to be mounted upon the lower bar 4 of the upper window sash, while the housing 2 is adapted to be mounted upon the upper bar 5 of the lower window sash. They are screwed to these bars with ordinary screws and are faced together so that the flat faces 6 and 7 of the respective housings will fall into alinement as the window sash 5 is lowered. At the upper, central portion of the housing 1, a bolt mortise 8 is cut out adapted to receive the bolt 9 rigidly mounted upon the face 7 of the housing 2. Immediately above the bolt 9 projects a lip 10 adapted to register with the upper portion of the mortise 8 when the lock is closed, so as to complete and render continuous the surface of the half sphere formed by the two housings when closed.together. Within the mortise 8, by means of the pivot 11, is pivoted a latch 12, same being provided with an inclined head 13 which when impinged upon by the bolt 9 is automatically rocked back upon the pivot 11, thus permitting the bolt 9 to fall below the head 13, whereupon the head automatically falls forward over the bolt 9, being carried forward by the gravitation of the extended arm 14 which operates as a weight for this purpose. Thus the window is automatically locked. A push pin 15 is pivoted at 16 at the extended end of the arm 17, the latten being oppositely positioned to the arm 14 and this push pin is extended up through the housing 1 ending in the button 18. By merely depressing this button 18 when the window is locked, the head 13 is drawn backward away from the bolt 9, thus unlocking the window and permitting the lower sash to be raised.

lVhile I have herein described a certain specific method of constructing and assembling the elements of my invention, it is understood same may be varied in minor details, not departing from the spirit of my invention as defined in the appended claims.

What I claim to be new and patentable is:

1. A window lock comprising two quarter spherical housings mounted, one upon the lower bar of the upper sash and the other upon the upper bar of the lower sash, and faced together so as to permit the lower sash to be raised past the upper sash; a bolt extended medially from the face of the housing mounted upon the upper bar of the lower sash, and a lip extended from the upper side of the housing out over the bolt and spaced from the bolt; a mortise chambered out of the upper frontal part of the housing mounted on the lower bar of the upper sash, to receive the bolt and lip of the other housing as the window is closed; a gravity latch pivotally mounted within said mortise and adapted automatically to look over the bolt aforesaid as the two housings meet; and a release pin pivoted from said gravity latch, extended through the housing, and adapted to release the latch from the bolt by depressing the pin. 7

2. A window lock comprising two quarter spherical housings mounted, one upon the lower bar of the upper sash and the other upon the upper bar of the lower sash, and faced together so as to permit the lower sash to be raised past the upper sash; a bolt extended medially from the face of the housing mounted upon the upper bar of the lower sash, and a lip extended from the upper side of the housing out over the bolt and spaced from the bolt; a mortise chamberedout of the upper frontal part of the housing mounted on the lower bar of the upper sash, to receive the bolt and lip of the other housing as the window is closed; a gravity latch pivotally mounted within said mortise and adapted automatically to look over the bolt aforesaid as the two housings meet; and means for releasing said latch from said bolt when required for opening the window.

JOHN L. BUSH.

lVitnesses:

C. C. SHUMWAY,

A. P. CRANDALLI 

